export default function (part) {
  let {
    paperless,
    sa,
    utils,
    complete,
    points,
    measurements,
    options,
    macro,
    paths,
    Path,
  } = part.shorthand()

  // Vent
  let slope = 15
  let width = measurements.wrist * (1 + options.cuffEase) * options.sleeveVentWidth
  points.ventFoldRight = points.usWristLeft.shiftOutwards(points.usWristRight, width)
  points.ventHelper = points.usWristRight.shiftFractionTowards(
    points.elbowRight,
    options.sleeveVentLength
  )
  points.ventSlopeEnd = points.ventHelper
    .shiftTowards(points.usWristRight, width)
    .rotate(90, points.ventHelper)
  points.ventSlopeStart = utils.beamsIntersect(
    points.usWristRight,
    points.elbowRight,
    points.ventSlopeEnd,
    points.ventHelper.rotate(-1 * slope, points.ventSlopeEnd)
  )

  // Hem
  let hemSa = sa ? 3 * sa : 30
  points.hemHelperLeft = points.usWristLeft
    .shiftTowards(points.usWristRight, hemSa)
    .rotate(90, points.usWristLeft)
  points.hemHelperRight = points.usWristRight
    .shiftTowards(points.usWristLeft, hemSa)
    .rotate(-90, points.usWristRight)
  points.hemLeftIntersection = utils.beamsIntersect(
    points.hemHelperLeft,
    points.hemHelperRight,
    points.usWristLeft,
    points.usElbowLeft
  )
  points.hemRightIntersection = utils.beamsIntersect(
    points.hemHelperLeft,
    points.hemHelperRight,
    points.usWristRight,
    points.elbowRight
  )
  points.hemVentIntersection = utils.beamsIntersect(
    points.hemHelperLeft,
    points.hemHelperRight,
    points.ventFoldRight,
    points.ventSlopeEnd
  )
  points.hemLeft = points.hemLeftIntersection.rotate(
    points.usWristLeft.angle(points.hemLeftIntersection) * -2,
    points.usWristLeft
  )
  points.hemRight = points.hemRightIntersection.rotate(
    points.usWristRight.angle(points.hemRightIntersection) * -2,
    points.usWristRight
  )
  points.ventRight = points.hemVentIntersection.rotate(
    points.ventFoldRight.angle(points.hemVentIntersection) * -2,
    points.ventFoldRight
  )

  // Clean up - Remove this and uncomment paths below to understand what's going on
  for (let i of Object.keys(paths)) delete paths[i]

  // Paths
  paths.seam = new Path()
    .move(points.ventFoldRight)
    .line(points.ventSlopeEnd)
    .line(points.ventSlopeStart)
    .line(points.elbowRight)
    .curve(points.elbowRightCpTop, points.usRightEdgeCpBottom, points.usRightEdge)
    .curve_(points.usRightEdgeCpTop, points.usTip)
    .curve(points.usTipCpBottom, points.usLeftEdgeCpRight, points.usLeftEdgeRight)
    .line(points.usLeftEdge)
    ._curve(points.usElbowLeftCpTop, points.usElbowLeft)
    .line(points.usWristLeft)
    .line(points.hemLeft)
    .line(points.ventRight)
    .line(points.ventFoldRight)
    .close()
    .attr('class', 'fabric')

  paths.ventHint = new Path()
    .move(points.ventSlopeStart)
    .line(points.usWristRight)
    .attr('class', 'stroke-sm help')

  paths.hem = new Path()
    .move(points.usWristLeft)
    .line(points.ventFoldRight)
    .attr('class', 'fabric lashed')

  if (complete) {
    // Notches
    macro('sprinkle', {
      snippet: 'notch',
      on: ['top', 'usElbowLeft', 'elbowRight'],
    })
    // Title
    points.title = points.tsLeftEdge.shiftFractionTowards(points.tsRightEdge, 0.5)
    macro('title', {
      at: points.title,
      nr: 5,
      title: 'underSleeve',
    })

    // Grainline
    macro('grainline', {
      from: points.boxBottom,
      to: points.armCenter,
    })

    if (sa) paths.sa = paths.seam.offset(sa).attr('class', 'fabric sa')

    if (paperless) {
      macro('ld', {
        from: points.usWristLeft,
        to: points.usWristRight,
        d: 15,
      })
      macro('ld', {
        from: points.usWristLeft,
        to: points.ventFoldRight,
        d: 30,
      })
      macro('ld', {
        from: points.hemLeft,
        to: points.ventRight,
        d: -15 - sa,
      })
      macro('ld', {
        from: points.hemLeft,
        to: points.usWristLeft,
        d: 15 + sa,
      })
      macro('ld', {
        from: points.usWristRight,
        to: points.ventSlopeStart,
        d: 15,
      })
      macro('ld', {
        from: points.ventFoldRight,
        to: points.ventSlopeEnd,
        d: 15,
      })
      macro('ld', {
        from: points.usWristRight,
        to: points.ventFoldRight,
        d: -15,
      })
      macro('vd', {
        from: points.usWristLeft,
        to: points.usElbowLeft,
        x: points.usLeftEdge.x - sa - 15,
      })
      macro('vd', {
        from: points.usWristLeft,
        to: points.usLeftEdge,
        x: points.usLeftEdge.x - sa - 30,
      })
      macro('vd', {
        from: points.usLeftEdge,
        to: points.usTip,
        x: points.usLeftEdge.x - sa - 30,
      })
      macro('vd', {
        from: points.usWristLeft,
        to: points.usTip,
        x: points.usLeftEdge.x - sa - 45,
      })
      macro('ld', {
        from: points.usElbowLeft,
        to: points.elbowRight,
      })
      macro('hd', {
        from: points.usLeftEdge,
        to: points.usTip,
        y: points.usTip.y - sa - 15,
      })
      macro('hd', {
        from: points.usLeftEdge,
        to: points.elbowRight,
        y: points.usTip.y - sa - 30,
      })
    }
  }

  return part
}